One person is dead and three more were injured in a shooting in Azusa, California, a northern suburb of Los Angeles. Two nearby polling stations and two schools have been placed on lockdown. Police are looking for a female suspect barricaded inside a home.

One person is dead and three others have been shot, LA County Fire Inspector Gustavo Medina told CNN. The Los Angeles Fire Department said earlier that they were treating four patients as a result of the incident.

The shooting was first reported around 2pm local time (5pm eastern). The suspect "pinned down" a number of local police officers, who were all safe and accounted for, police said Tuesday afternoon.

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There are about 30 people at two polling locations affected by the incident. Local authorities said they were "monitoring" the situation and advised voters to "avoid the area and, if necessary, cast a ballot at an alternate polling location."